• Child Health Nursing Research
• /
• v.10 no.4
• /
• pp.413-422
• /
• 2004

Purpose: This study was conducted to describe the perception of parental role held by university students and to examine difference in perception of parental role according to student characteristics. Method: The participant were 338 university student in Gangreung city. The instrument was developed by researcher and consisted of 4 subcategories ; child rearing environment, parental sensitivity, growth and development of infant, and physical care. Data were collected from May 10 to June 1 in 2004 and were analyzed using SPSS Win 10.0 program. Result: The university students' perception of total parental role had a mean item score of 4.02, with 4.12 for parental sensitivity, 4.00 for child rearing environment, 4.00 for physical care and 3.95 for growth and development. There were significant differences in perception of parental role according to sex(t=-5.55, p=.00), grade(F=13.12, p=.00), type of college(F=28.34, p=.00), father's age(F=5.01, p=.00), father's education(F=5.01, p=.00), mother's education(F=3.33, p=.03) student's marriage plan(t=2.37, p=.01) main caretaker(F=9.53, p=.00) person who lived with student in childhood(F=3.62, p=.01) and student's perception of the need for education for parental role(t=3.74, p=.00). Conclusion: The impact of childhood experience has lifelong significance on subsequent health and development. Especially, the experience of childhood is highly affected by the quality of parental role. It is important to identify university student's perception of parental role as pre-parent preparation for parenting. Therefore, pre-parent education program are necessary.

• Journal of dental hygiene science
• /
• v.10 no.3
• /
• pp.161-165
• /
• 2010

The aim of this study was to investigate the antimicrobial effect of (-)-epigalocatechin on Fusobacterium nucleatum, Prevotella intermedia, and Porphyromonas gingivalis. To test the antimicrobial effect of (-)-epigalocatechin, the minimum inhibitory concentration (MIC) of against 4 strains of F. nucleatum, 2 strains of P. intermedia, and 2 strains of P. gingivalis was measured by broth dilution method. Time-kill curves were assessed for susceptible bacteria, testing $0{\times}MIC$ (control group), $0.5{\times}MIC$, $1{\times}MIC$, and $2{\times}MIC$ for (-)-epigalocatechin, by counting viable bacteria after 3, 90, 180, 360, 720, 1440 minutes. The MIC of (-)-epigalocatechin was 0.312-0.625, 0.625, and 0.625 mg/ml on the strains of F. nucleatum, P. intermedia, and P. gingivalis, respectively. Time-kill curves demonstrated (-)-epigalocatechin had bactericidal activity on P. intermedia ATCC $25611^T$, P. gingival is ATCC 53978, and F. nucleatum subsp. fusiforme ATCC $51190^T$. The results suggest that (-)-epigalocatechin can be useful in developing the oral hygiene product such as tooth past and gargling solution for the prevention of periodontal diseases.

• Journal of the Korean Electrochemical Society
• /
• v.3 no.2
• /
• pp.109-114
• /
• 2000

The relation between the phase-shift profile fur the intermediate frequencies and the Langmuir adsorption isotherm at the poly-Ir/0.1 M $H_2SO_4$ aqueous electrolyte interface has been studied using ac impedance measurements, i.e., the phase-shift methods. The simplified interfacial equivalent circuit consists of the serial connection of the electrolyte resistance $(R_s)$, the faradaic resistance $(R_F)$, and the equivalent circuit element $(C_P)$ of the adsorption pseudoca-pacitance $(C_\phi)$. The comparison of the change rates of the $\Delta(-\phi)/{\Delta}E\;and\;\Delta{\theta}/{\Delta}E$ are represented. The delayed phase shift $(\phi)$ depends on both the cathode potential (E) and frequency (f), and is given by $\phi=tan^{-1}[1/2{\pi}f(R_s+R_F)C_P]$. The phase-shift profile $(-\phi\;vs.\;E)$ for the intermediate frequency (ca. 1 Hz) can be used as an experimental method to determine the Langmuir adsorption isotherm $(\theta\;vs.\;E)$. The equilibrium constant (K) for H adsorption and the standard free energy $({\Delta}G_{ads})$ of H adsorption at the poly-Ir/0.1 M $H_2SO_4$ electrolyte interface are $2.0\times10^{-4}$ and 21.1kJ/mol, respectively. The H adsorption is attributed to the over-potentially deposited hydrogen (OPD H).

• The Korean Journal of Rehabilitation Nursing
• /
• v.10 no.1
• /
• pp.5-11
• /
• 2007

Purpose: This study was conducted to compare the level of cognitive and physical function by the level of social disengagement in institutions and community dwelling elderly. Method: The study subjects were 209 people whose age ranged from 65 to 94. The data were surveyed with social disengagement index, MMSE-K, and ADL, and analysed by SPSS 11.0 using frequency, t-test, ANCOVA and ANOVA. Results: 1) The level of social disengagement was 1.67 in institution and 3.25 in community elderly, and showed statistically significant difference (F=41.07, p<.001). 2) There were statistically significant difference in MMSE-K (F=15.51, p<.000), and activity of daily living (F=9.65, p=.002) between two residence after control the age, gender, religion, allowance and number of children. 3) There were statistically significant difference in MMSE-K (F=6.55, p=.002) by social disengagement in community dwelling elderly. Conclusions: Programs for successful aging to reduce social disengagement should be developed that stimulate social activities and then improve cognitive function for the elderly. For these, establishing social policies in nation and local government is needed. Especially, these policies should be conducted among the elderly with low-income living in institutions.

• Women's Health Nursing
• /
• v.9 no.3
• /
• pp.256-269
• /
• 2003

Purpose: This study was intended to investigate the types and seriousness of the couvade syndrome, pregnancy-related physical and psychological symptoms among expectant fathers whose spouses were pregnant. Method: The subject was consists of 100 expectant fathers at one hospital in Seoul, Korea. The pregnant women had not been diagnosed any medical complication. Data were analyzed by SPSS/PC program. Result: 1) The total mean score was 1.85: the mean score of perceived physical symptoms (1.87) revealed higher than the mean score of psychological symptoms (1.81). 2) With the respect to the general characteristics of subjects, there were statistically significant correlations between subject's level of education and couvade symptoms (r=-.209, p=.037), gestational age and couvade symptoms (r=-.227, p=.023), family total income and couvade symptoms (r=-.198, p=.048), perceived self health status and couvade symptoms (r=-.254, p=.011). 3) With the respect to the general characteristics of subjects, there were statistically significant differences in pregnant woman's age (t=1.363, p=.044),occupation of subject (F=3.594, p= .009), educational level of subject (t=3.506, p=.002), family total income (F=16.822, p= .000), perceived self health status (F=3.151, p=.047). Conclusion: Couvade syndrome is an issue for nurses who perform an important role in the care of pregnant women and their spouses.

• The Transactions of the Korean Institute of Electrical Engineers C
• /
• v.48 no.9
• /
• pp.623-627
• /
• 1999

We report a new in-situ fluorine passivation method without in implantation by employing excimer laser annealing of $SiO_{x}F_{y}$/a-Si structure and its effects on p-channel poly-Si TFTs. The proposed method doesn't require any additional annealing step and is a low temperature process because fluorine passivation is simultaneous with excimer-laser-induced crystallization. A in-situ fluorine passivation by the proposed method was verified form XPS analysis and conductivity measurement. From experimental results, it has been shown that the proposed method is effective to improve the electrical characteristics, specially field-effect mobility, and the electrical stability of p-channel poly-Si TFTs. The improvement id due to fluorine passivation, which reduces the trap state density and forms the strong Si-F bonds in poly-Si channel and $SiO_2/poly-Si$ interface. From these results, the high performance poly-Si TFTs canbe obtained by employing the excimer-laser-induced fluorine passivation method.

• Women's Health Nursing
• /
• v.4 no.2
• /
• pp.258-270
• /
• 1998

The purpose of this study was to investigate the mother's knowledge level of breastfeeding's benefit and rationale of breastfeeding's benefit. The subjects were 98 mothers who within 3 days after childbirth in 2 obstetric clinic in K city and N city from April 7 to May 10, 1996. Data were collected by a questionnaire developed by researchers. This study was statistically analyzed according to Frequency, ANOVA, Pearson Correlation Coefficient. The result of this study was as follows : 1. Mean score of mother's knowledge level of breastfeeding's benefit was ranged from $0{\sim}19$. Mean score of breastfeeding's benefit was 10.28. Mean score of rationale of breastfeeding's benefit was 8.57. Mean score of rationale of breastfeeding's benefit and rationale of breastfeeding's benefit was not high. 2. General characteristics and feeding characteristics were significantly related to mother's knowledge level of breastfeeding's benefit as follows : mixed feeding method in planning feeding method(F=3.33, p<.05) 3. General characteristics and feeding characteristics were significantly related to mother's knowledge level of rationale of breastfeeding's benefit as follows : mixed feeding method in planning method(F=3.96, p<.05), mixed feeding method in previous feeding method(F=3.16, p<.05). 4. A positive correlation between mother's knowledge of breastfeeding's benefit and rationale of breastfeeding's benefit was statistically significant(r=.86, p<.001).

• Journal of Power Electronics
• /
• v.18 no.2
• /
• pp.511-521
• /
• 2018

Proportional capacitor current feedback active damping (CCFAD) has a limited valid damping region in the discrete time domain as (0, $f_s/6$. However, the resonance frequency ($f_r$) of an LCL-type filter is usually designed to be less than half the sampling frequency ($f_s$) with the symmetry regular sampling method. Therefore, ($f_s/6$, $f_s/2$) becomes an invalid damping region. This paper proposes an improved CCFAD method to extend the valid damping region from (0, $f_s/6$ to (0, $f_s/2$), which covers all of the possible resonance frequencies in the design procedure. The full-valid damping region is obtained and the stability margin of the system is analyzed in the discrete time domain with the Nyquist criterion. Results show that the system can operate stably with the proposed CCFAD method when the resonance frequency is in the region (0, $f_s/2$). The performances at the steady and dynamic state are enhanced by the selected feedback coefficient H and controller gain $K_p$. Finally, the feasibility and effectiveness of the proposed CCFAD method are verified by simulation and experimental results.

• Korean Journal of Adult Nursing
• /
• v.12 no.3
• /
• pp.431-451
• /
• 2000

In this paper, I will examine the variables influencing the Quality of Life of arthritis patients and present basic materials which help arthritis patients have positive thinking in life and ultimately lead a satisfactory life. The subjects for this study are 231 inpatients and outpatients with arthritis living in J and K city in Chonbug Province. For the analysis of collected data I employed the SAS program. The variables for characteristics and the quality of life were analysed by descriptive statistics, T-test and ANOVA, and the relations among variables were analysed through Pearson Correlation; the Regression method was employed to predict the factors affecting quality of life. For the validity of reliance on measuring equipment Cronbach Alpha was used. The results of the study are as follows : (1) The mean score of quality of life of arthritis patients is 3.09(5 in the maximum). The general characteristics which affect the quality of life are age(F=5.13, p=0.0006), standard of education(F=6.49, p=0.0003), marriage status(F=7.77, p=0.0005), monthly pay(F=4.37, p=0.0020), medical benefits (F=4.85, p=0.0087), and supports(F=4.39, p=0.0050). For the disease-related characteristics, there is a significant difference in the 6 items: pain control method(F=5.92, p= 0.0002), physical therapy(F=3.25, p=0.013), whethere or not patients exercise(F=4.62, p=0.0000), regularity of exercise(F=4.79, p=0.0000), frequency of exercise(F=6.29, p=0.0001), and amount of exercise(F=4.62, p=0.0043). Depending on the type of arthritis, there is also a significant difference in the degree of pain felt. The patients with infectious arthritis suffer from pain the most, followed by those with gout, rheumatism and degenerative arthritis, in that order. Although statistics don't show any convincing evidence, those with gout perceive that they are in best health condition, followed by those with rheumatism, degenerative arthritis, and infectious arthritis, in that order(F=2.23, p=0.0669). (2) The quality of life of arthritis patients is correlated positively with perceived health status(r=0.56, p=0.0001), health promoting behavior(r=0.53, p=0.0001), family support (r=0.46, p=0.0001), amount of exercise (r=0.36, p=0.0001), ADL(r=0.36, p=0.0001), HLOC(r=0.32, p=0.0001), frequency of exercise(r=0.32, p=0.0001)in that order, while correlated negatively with the degree of pain felt(r=-0.32, p=0.0001), the number of pain regions(r=-0.19, p= 0.0041), and the duration of pain(r=-0.14, p=0.0279). (3) Regression analysis reveals that the most powerful predictor of the quality of life is perceived health status, which account for 31.11%. The other predictors of the quality of life, which account for 60.22%, are health promoting behavior(16.51%), family support(3.81%), ADL(2.52%), gender(1.86%), the number of family members(1.36%), level of pain(1.24%), duration of pain (1.08%), and level of education(0.67%). The results of the study show that perceived health status and health promoting behavior are the two most important variables. However, considering that the perceived health condition is difficult to control by nursing intervention, it is suggested that the level of expectation for patients, must be decided first, and the health promoting behavior and the family support influencing the quality of life must be taken into account as targets for nursing intervention. As a way of controlling the quality of life, I think that a more comprehensive approach comprising the above important variables along with demographic and general characteristics is needed. I also suggest that we must continue to explore the variables affecting the quality of life and include those variables in nursing intervention.

• Korean Journal of Adult Nursing
• /
• v.14 no.3
• /
• pp.378-389
• /
• 2002

Purpose: The purpose of this study was to identify the relationship of fatigue and quality of sleep in patients with cancer. Method: The data was collected from January to February 2001. Study objects were recruited K university hospital in Busan, Korea. Their fatigue was measured using the Revised Piper Fatigue Scale developed by Piper et. al(1998), and quality of sleep was measured using Quality of Sleep Questionare by Oh et. al(1998). Result: 1) The fatigue score was mean $114.80{\pm}34.88$(range: 22-220). The sub dimension that showed behavior/severity score at $33.70{\pm}13.89$, affective score at $24.23{\pm}3.33$, sensory score at $27.74{\pm}12.51$, and cognitive/mood score at $29.11{\pm}3.71$. And sleep quality score was mean $37.32{\pm}8.18$. 2) There was a significant difference in religion(F=4.157, P= .008), present therapy(F=2.536, P= .043), past therapy(F=6.625, P= .000), major caregiver(F=3.133, P= .028), and change of weight(F=7.965, P=.006), according to general characteristics in the fatigue in patients with cancer. 3) There was a significant difference in present pain(t=-2.103, P= .037) and change of weight(F=5.484, P=.005), according to general characteristics in the sleep quality in patients with cancer. 4) There was a significant negative correlation between fatigue and quality of sleep(r=- .340, P= .000). Conclusion: Patients with cancer experience in fatigue. Increase in fatigue are associated with decreases in quality of sleep. Nurses must provide patients with nursing care about the occurrence of fatigue and interventions to deal with sleep disturbance.